<template>
  <div class="top-category">分类组件
 <div class="container">
   <XtxBread separator=">">
     <XtxBreadItem to="/">首页</XtxBreadItem>
     <XtxBreadItem>{{category.topCategory.name}}</XtxBreadItem>    
   </XtxBread>
   <!-- 轮播图组件 -->
   <xtx-carousel :list="home.bannerList" style="height:500px ;"></xtx-carousel>
   <!-- 所有二级分类 -->
<div class="sub-list">
  <h3>全部分类</h3>
  <ul>
    <li v-for="item in topCategory.children" :key="item.id">
      <a href="javascript:;">
        <img v-lazy="item.picture" >
        <p>{{item.name}}</p>
      </a>
    </li>
  </ul>
</div>
   <!-- 分类关联商品 -->
   <transition name="fade">
    <div  v-if=" topCategory.children">
      <div class="ref-goods"  v-for="sub in topCategory.children" :key="sub.id">
        <div class="head">
          <h3>- {{sub.name}} -</h3>
          <p class="tag">温暖柔软，品质之选</p>
          <XtxMore />
        </div>
        <div class="body">
          <GoodsItem :goods="goods" v-for="goods in sub.goods" :key="goods.id" />
        </div>
      </div>
    </div>
    <div  v-else>
      <div class="ref-goods"   v-for="i in 5" :key="i">
        <div class="head">
          <h3>- -</h3>
          <p class="tag"></p>
          <XtxMore />
        </div>
        <div class="body">
          <GoodsItem v-for="i in 5" :key="i" />
        </div>
      </div>
    </div>
   </transition>
 </div>
  </div>
</template>

<script lang="ts" name="TopCategory" setup>
import useStore from '@/store';
import { storeToRefs } from 'pinia'; 
import { watchEffect } from 'vue';
import { useRoute } from 'vue-router';
import GoodsItem from './components/goods-item.vue'
const route=useRoute()
const {category,home}=useStore()
home.getBannerList()
// watch(()=>route.params.id,()=>{
//   // if(!route.params.id)return
//   //更严谨的做法，判断路径是否相符
//   if(route.fullPath===`/category/${route.params.id}`)
//   category.getTopCategory(route.params.id as string)
// },{immediate:true})
watchEffect(()=>{
  if(route.fullPath!==`/category/${route.params.id}`)return
    category.getTopCategory(route.params.id as string)
})
const {topCategory}=storeToRefs(category)
</script>

<style scoped lang="less">
.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }
  .sub-list {
    margin-top: 20px;
    background-color: #fff;
    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;
      li {
        width: 168px;
        height: 160px;
        a {
          text-align: center;
          display: block;
          font-size: 16px;
          img {
            width: 100px;
            height: 100px;
          }
          p {
            line-height: 40px;
          }
          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }
   .ref-goods {
    background-color: #fff;
    margin-top: 20px;
    position: relative;
    .head {
      .xtx-more {
        position: absolute;
        top: 20px;
        right: 20px;
      }
      .tag {
        text-align: center;
        color: #999;
        font-size: 20px;
        position: relative;
        top: -20px;
      }
    }
    .body {
      display: flex;
      justify-content: flex-start;
      flex-wrap: wrap;
      padding: 0 65px 30px;
    }
  }
}
</style>